Question

Select the correct answer.

Solve the following equation for x.

x2 - 36 = 0

A.
x = 1; x = -36
B.
x = -1; x = 36
C.
x = -6; x = 6
D.
x = -18; x = 18

Answer 1

The answer is D for this one

Answer 2

Answer: D

Explanation:

2x-36=0

+36 +36

___________

2x=36

x=18

Even if one equation, -18 was not solved, you can easily cross out the ones without 18 and get the answer.